Compact disc. the readable surface of a compact disc includes a spiral track wound tightly enough to cause light to diffract into a full visible spectrum. Retailer of music cds movies dvds and video games. Sells cds and videos online. Pronunciation of cd. translations of cd. cd synonyms cd antonyms. information about cd in the free online english dictionary and encyclopedia. audio cd. All about how discs are recorded and played. Information about cd. in the free online english dictionary and encyclopedia.. cd replication on the other hand obtains an imprint from a master cd and stamps the data. Cd (1) see also carrier detect and candela . (2) ( c ompact d isc) an optical digital audio disc that contains up to 74 minutes of hi-fi stereo sound Compact disk or compact disc ( ) n. ( abbr. cd ) a small optical disk on which data such as music text or graphic images is digitally encoded Hyperlinked article on the element with notable characteristics applications history occurrence precautions and more.